NAME
authority - loads a module only if it has a particular authority
SYNOPSIS
use authority 'cpan:STEVAN', Moose => qw();
use authority 'cpan:TOBYINK', HTML::HTML5::Builder => qw(:standard);
DESCRIPTION
This pragma allows you to indicate that you wish to load a module only
if its authority is a particular URI.
Using this pragma automatically enables UNIVERSAL::AUTHORITY.
"use authority $authority, $module, @arguments"
Require and import the module at compile time. This is the usual
mode of operation.
"authority->import($authority, $module, @arguments)"
Require and import the module at run time.
Note that the special $authority value "Any", indicates that any
authority is allowed (including undef).
Experimentally, $module may contain a module name and minimum version,
separated with a space.
There is also a very experimental feature allowing releases of the same
package by different authorities to live side-by-side, though only one
of them can be required into a running script.
In this case, assuming that the inc path is "/opt/perl/lib" and a script
does this:
use authority 'cpan:JOE', My::Module => qw();
Then Perl will attempt to load "/opt/perl/lib/cpan_3A_JOE/My/Module.pm"
before it tries the usual "/opt/perl/lib/My/Module.pm".
This is not anywhere near as powerful as the authority feature of Perl
6, but it's a start.
BUGS
Please report any bugs to
.
SEE ALSO
* Object::AUTHORITY - an AUTHORITY method for your class
* authority::shared - a more sophisticated AUTHORITY method for your
class
* UNIVERSAL::AUTHORITY - an AUTHORITY method for every class
(deprecated)
* UNIVERSAL::AUTHORITY::Lexical - an AUTHORITY method for every class,
within a lexical scope
* *authority* (this module) - load modules only if they have a
particular authority
Background reading: ,
.
AUTHOR
Toby Inkster .
COPYRIGHT AND LICENCE
This software is copyright (c) 2011 by Toby Inkster.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
DISCLAIMER OF WARRANTIES
THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.